(2) An established or organized procedure; a method.

(3) A computer system refers to the hardware and software components that run a computer or computers.

(4) An information system is a system that collects and stores data.

(5) On Macintoshes, System is short for System file, an essential program that runs whenever you start up a Macintosh. The System provides information to all other applications that run on a Macintosh. The System and Finder programs together make up the Mac OS.

(6) System often simply refers to the operating system.